Type-writing machine.



c. B. GORGORAN. TYPE WRITING MACHINE.

APPLICATION FILED NOV 14, 1913.

Patented Mar. 16. 191 5.

I CORNELIUS IB. ooncoium, on NEW YOR -xxx; g I

wanna comr'enm or new YORK,"N.;Y.,.A"GORPOBATIONOF DELAWARE WYEED gTAllES PATENT @FFIQE;

' TYPE-WRiTING ,MAClHltNE. I

this character, which will permit adjustment of the platen with reference to the line space wheel,

Loose upon the platen axle is a head which carries oppositely disposed dogs, each of which has a. series of very fine teeth which are normally in mesh with a fine ratchet or knurl provided upon the linespace wheel. The dogs have inwardly extending arms which are simultaneously engaged by a collar which is slid along the platen axle by, pressure upon a finger piece or abutment placed on the outward side of the hand whee which is usually fixed upon the end ofthe platen axle.

It will be seen that a very simple structure is attained, since a single member sliding along the platen axle engages a plurality of dogs to swing them out of engagement with the locking teeth of the ratchet wheel. The dogs may be so placed that when the teeth on one dog fit in the locking teeth of the line-space wheel, theteeth on the other dog would be out of mesh, thus doubling the range of adjustment, and otherwise permitting twice as fine adjustment as in the case of a single dog.

The clutching mechanism is contained with abarrel that is preferably provided upon the line-space wheel; and by loosening a holding collar, the line-space wheel and barrel may he slid along the platen axle, thus uncovering the clutching mechanism and giving access thereto for examination and cleaning. The barrel is closed by a simpledevice.

Other objects and advantages will herein: after appear. v

In the accompanying drawings, Figure 1 is a perspective view of part of an Underwood paper carriage, to which my invention is shown applied. Fig. 2 is a sectional View Specification of Letters Patent. Patented Mar. 16, 1915. Application filed November 14, 1913. Serial No. 800,937.

showing the clutching device in its normal operative position, in which the line-space wheel is locked to the platen axle by' means of the clutch dogs. view showing the clutch dogs disengaged from the line-space wheel, torelease thelat ter from the platen axle. Fig. 4: is a detail perspective of the parts comprising the clutching mechanism. Fig. 5 is av-iew of one ofthe clutch dogs, to show the teeth provided on its nose, which engage the time which one dog engages the fine teeth; while the other dog rests on the top of said teeth, which arrangement provides for a'finer adjustment of the line-space wheel.

The usual platen 1 is fixed upon'an axle. 2 journaled in the ends of a platen'fr ame Line-spacingis effected by lever 4, plunger 5, pawl 6 andline-space wheel 7, connected to the platen axle with -a clutch.;--Dog s 8 are provided with fine teeth 9 on their noses 10 to engage fine teeth 11 on the line-space wheel7, and are pivoted at 12 in a bl'ock, or yoke 13 fast to the platen axle. The platen may be released from the platenaxle Qfby releasing or withdrawing the dogs from engagement with the line-space whee-l teeth,

This is effected by pushing a but'ton 14, which by means of long stems 1'5,1'-pass ing through the recessed finger wheel'I6,-'isconnected'to a loose collar 17 on the platen axle 2, and presses said collar against'a sleeve 18, to thrust the latter against tails 18 formed on the dogs, and thereby rocks the latter to swing their noses 10 clear of the line-space Wheel teeth.

The collar 17 is retracted by means of the springs 19, after pressure is removed from the push button. As stated in the brief description of Fig. 6, the dogs may be so arranged that while one dog rests on the top of the cut teeth, the other is in engagement with said teeth. To effect this, the dogs must be mounted so that one engages half a Fig. 3 is ti-sectional V teeth on the sideof' the line-space: wheel. Fig. 6 is a modified form of the clutch, in.

tooth in advance of or behind the other dog.

groove 22 in its inner surface, and is provided with openings 23, through which cars 24 of a cover 25 may enter said groove. By a slight subsequent rotation of the cover, the

' latter will be secured. To inspect or clean the clutch, the cover 25 is removed and then by loosening the set screw 26 in the collar 27, the line-space wheel may be moved away from the dogs, exposing the entire mechanism.

vided with a finger wheel, a line-space wheel adapted to turn on said axle, a series of teeth out on the outside face of the line space wheel, a yoke fixed upon the axle, a spring-pressed tailed dog pivoted in said yoke, adapted to engage said teeth, a sliding sleeve on the axle adapted to engage the tail of said deg to releaselthe dog from engagement with the said teeth, a loose collar on said sleeve, a stem connected to said collar and passing through the finger wheel at one side of the axle, and a push button mounted on said stem outside the finger wheel.

2' In a typewriting machine in combination an axle, a platen fixed thereon and provided with a finger Wheel, a line space wheel adapted to turn on said axle, a .series of' teeth cut'ou the outside face of the linespace wheel, a yoke fixed upon the axle, multi-toothed spring-pressed tailed dogs pivoted in said yoke, adapted to engage said teeth, a sliding sleeve on the axle adapted to engage the'tails' of said dogs to release "the dogs from engagement with the said teeth,-

a loose collar on said sleeve, stems connected to said collar and passing through the finger wheel, and a, push button connecting said stems and adapted to move into the recess of said finger-wheel when pressure is applied to said button.

3. In a typewritin'g machine in. combina-' tion an axle, a platen fixed thereon and provided with a finger wheel, a line-space wheel adapted to turn on said axle, a series of teeth out on the outside face of the linespace wheel, a yoke fixed upon theaxle, spring-pressed multi-too'thed dogs piyoted in said yoke, each provided with teeth adapted to fit the said series of teeth and spaced so that said engagement of one dog is hall? a'tooth in advance of the engagement of the other dog, a sliding sleeve on the axle adapted to engage the tails of said dogs to release the, dogs from engagement with the said teeth, a loose collar on said sleeve, stems mmected to said collar and passing through the finger wheel, and a push button connect ing said stems and-adapted to move into the recess of said finger wheel when pressure is applied to said button.

4. In combination with a platen fixed upon an axle, a line-space wheel loose on said axle, a series of fine teeth on the side of said linespace wheel, a grooved casing formed on said line-space wheel, dogs pivoted in a yoke fixed on the axle w1tlnn said casing, an adjustable'collar on said axle engaging said line-space wheel to-keep'said line-space 'wheel Within the range of said dogs, to permit the latter to engage the fine teetlron the line-space wheel to hold itto the axle under the protection of the casing, and a removable cover provided with ears for engaging the groove in the casing.

CORNELIUSB. CORCORAN.

Witnesses.

Trrus H. Iaons, J oLlus DUCKSTINE. 

